Home / 217,840.56-300,638.16-122,366.40

Finding the Fourth Proportional to 217,840.56, 300,638.16 and 122,366.40

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Solution

The fourth proportional to 217,840.56, 300,638.16 and 122,366.40 is: 168,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,840.56 : 300,638.16 = 122,366.40 : x
  2. Step 2: Convert to fraction form
    217,840.56/300,638.16 = 122,366.40/x
  3. Step 3: Cross multiply
    217,840.56x = 300,638.16 × 122,366.40
  4. Step 4: Simplify right side
    217,840.56x = 36,788,009,341.82
  5. Step 5: Solve for x
    x = 36,788,009,341.82/217,840.56
  6. Step 6: Final answer
    x = 168,875.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.